/**
 * Copyright (C) 2007-2011 JUG Events Team <info@jugevents.org>
 *
 * This file is part of JUG Events Web Application.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package it.jugpadova.util;

import org.springframework.security.authentication.encoding.Md5PasswordEncoder;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;

/**
 * Defines methods for security porpouse
 * 
 * @author Enrico Giurin
 * 
 */
public class SecurityUtilities {

    /**
     * Returns username of authenticated user.
     *
     * @return
     */
    public static String getUserAuthentichated() {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();

        if (authentication != null && authentication.isAuthenticated()) {
            return authentication.getName();
        }
        return null;
    }

    /**
     * Encrypt password (MD5) according to security configuration file defined
     * in the parancoe plugin security.
     * It works only if the userPropertyToUse in the <code>ReflectionSaltSource</code> is set
     * to <code>getUsername</code>.
     * @param rawPass
     * @param username
     * @return
     */
    public static String encodePassword(String rawPass, String username) {
        Md5PasswordEncoder encoder = new Md5PasswordEncoder();
        return encoder.encodePassword(rawPass, username);
    }
}
